Were you around for the Pewdiepie-map infestation? It was like a plague of not second-, not third-, not fourth- but fifth-rate stories meant just to give Pewdie something to scream about. It's probably still going on, but I just generally avoid the showcase and non-development mod forums. Me and a few friends have witnessed the slow decline in quality of custom stories in this particular community to the point where we almost don't know why we bother working to produce a mod for a community which values content that is unoriginal, shallow, and of low quality.
So no, I doubt anyone hates him, he's just had a profound impact on our little modding community in ways he likely did not intend.
Edit just in case anyone misinterprets this as disdain for Pewdiepie -- Pewdiepie is quite well-known in the gaming community and from what I've seen of most of his videos is pretty hilarious and entertaining.